The sons of a woman who died after smoke filled a Washington subway train are suing the Metro transit agency for 50 million Attorney Patrick Regan filed the lawsuit Friday on behalf of Marcus and Anthony Glover the adult sons of Carol Glover The lawsuit accuses Metro of negligence that led directly to the 61-year-old Glovers death It says she was trapped on the smoke-filled train near the LEnfant Plaza station for 45 minutes before rescuers arrived At that point the lawsuit says she had no pulse The lawsuit also says ventilation fans in the subway tunnel didnt work properly More than 80 other people were sickened by the smoke during the Jan 12 accident which was caused by an electrical malfunction What led to the malfunction is under investigation